Moon Phases, Eclipses, Tides and Seasons

The New Moon The new moon is totally dark When the moon is between the sun and the earth its sunlit side is turned away from the earth Earthshine (sunlight reflected off the earth towards the moon) can dimly illuminate the totally dark moon

On the way to Full we Wax The phases on the way to full Waxing Crescent (less than half lit) First quarter Waxing Gibbous (more than half lit) Full

From Full to New we Wane The phases on the way to new Waning gibbous (more than half lit) Last quarter Waning crescent (less than half lit) New

The Phases Illustrated

Moon Phases Recap

Eclipses The partial or total blocking of one object in space by another.

Shadow vocabulary Penumbra: The larger, less dark portion of a shadow. Umbra: The smaller darker portion of a shadow.

Main Types of Eclipses Solar Lunar

Solar Eclipses The blocking of sunlight to Earth that occurs when the moon is directly between the sun and the earth.

Lunar Eclipses The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon.

Partial Eclipses Lunar Solar Annular

Partial Lunar Eclipse Occurs when the sun, earth and moon are not quite in line. Occurs when the moon passes partly into the umbra of Earth’s shadow.

Partial Solar Eclipse Where people in the penumbra can still see an extremely bright portion of the sun.

Annular Eclipse When the moon is farther away from the Earth, and appears smaller and cannot quite cover the entire sun. A ring appears Type of partial solar eclipse

Tides Caused mainly by differences in how much the moon’s gravity pulls on different parts of the earth. The periodic rise and fall of the level of water in the ocean.

Types of Tides Spring Tide Neap Tides http://oceanservice.noaa.gov/education/kits/tides/media/supp_tide06a.html

Differences in tides

Types of Tides Daily Ocean Tides Occur Twice Daily Tides happen about every 12.5 hours 2 high tides 2 low tides

Questions…. During which moon phase does a spring tide occur?

Full Moon and New Moon

Questions…. During what moon phase does Neap tide occur?

First Quarter and Third Quarter

Questions…. What type of tide occurs when it is not a full, new, 1st quarter, or 3rd quarter moon?

Answer The tides will continue to rise and fall with the gravity of the moon at regular 6 hrs rising and 6 hrs falling. Regular Cycle

Questions…. How often do Neap Tides occur?

Questions…. How often do Spring Tides occur?

Seasons The tilt is the reason for the season!

Seasons